2N gateways with FreePBX and its derivatives (Elastix, trixbox)

Seeting up 2N VoiceBlue can be quite difficult due to few facts

Documentation contains some contradictory information which could take a lot of time searching for right answers
- in 2N OfficeRoute_VoiceBlueEnterprise - User Manual ver. 1.7rev1.pdf
  Page 56 (SIP Lines, just before picture)
  By default an internal SIP line is prepared. This line is necessary for you to make calls out of the SIP proxy.
- in HowTo set outgoing routing in VoiceBlue Enterprise.pdf
  Page 1 (Numbered list item 2)
  First delete previously (default) created lines. Use a red X icon to delete lines.
support from 2N in Czech Republic will redirect You to local support and this could mean a lot.
We were told that default settings with IP 10.0.0.1 is needed for internal working of gateway.
If this is necessary for internal working why is it public accessible from outside?
At one site gateway was spraying SIP REGISTER requests all over 172.X.X.X network?

Support redirect to local/national supports although support@2n.cz

Cookbook

Trixbox

Trunks

SIP

Outgoing Settings

Trunk Name: GSM2NTrunk

Peer Details

type=friend 
nat=no 
insecure=very 
host=$IP_GSMGW 
dtmfmode=inband 
deny=0.0.0.0/0.0.0.0
permit=$IP_GSMGW/255.255.255.255 
canreinvite=no 
disallow=all 
allow=alaw
context=from-trunk

Incomming Settings

Context Name: GSM2NContext

type=friend 
nat=no 
insecure=very 
host=$IP_GSMGW 
dtmfmode=inband 
deny=0.0.0.0/0.0.0.0
permit=$IP_GSMGW/255.255.255.255 
canreinvite=no 
disallow=all 
allow=alaw
context=from-trunk

Notes:
- If CALLERID parsing editing is needed (prepending for redial for Cisco/Linksys phones) then use custom context (context=from-trunk-custom)
- output of the sip show peers coomand should show registered GSM2N trunk and context, possibly unmonitored

Outobund routes
- Name: GSM
- Patterns (Croatian mobile providers, dialout prefix 9, prepended prefix 00 for phones to do automatic redial)
```
9|091X.
9|0038591X.
9|092X.
9|0038592X.
9|095X.
9|0038595X.
9|098X.
9|0038598X
9|099X.
9|0038599X.
```
- Trunks (order)
  1. GSM2NTrunk
  2. PSTNProvider
  Assterisk fill failover if trunk returns (503 Service Unavailable and not 486 Busy Here)

2N

factory rset
- prepare licence if not backuped (licence can be found in backup)
Network
nothing, zilch, nada

Devices

SIP lines

Line ID	SIP server	Phone Number	Description
[16]	$IP_ASTERISK	$EXTENSION

Detalis per line
- Line:16
- register with proxy: false
  (uncheck)
- port: 5060
  FreePBX from trunk outgoing settings
- SIP name: numeric|text
  prepended in from-trunk-context
- Enable CLIP: true
  (check)
  to send CLIP callerid

SIM Cards
- PINs
  add PIN per SIM card if needed

GSM routing
incomming routing based on modules (no matter which SIM is inside) or SIM cards

GSM device	Service Name	Description
GSM module - 1	incomming	099
GSM module - 2	incomming	091

SIM routing
incomming routing based on SIO card

Operator
extension to be called upon incomming call from mobile network
- Operator number: 38517779555
  Inbound route DID in FreePBX

table

Service	Operator number	VoIP Line	Description
incomming	38517779555	16

SIP proxy
OFF
link: switch proxy on (meaning it is off)

LCR == outgoing routing on GSMGW

Routes
add them first
- Name:
- Lines of route:
  pick SIM card or module
- CLI/CLR: default

Table

Destination	Prefix[es]	Enabled	Routes	Description
091	091;0038591;092;0038592;095;0038595	checked	VIP 091	VIP 091
099	098;0038598;099;0038599	checked	T-mobile 098, 099	HT 098, 099

Destination details
- Prefix
  091;0038591;092;0038592;095;0038595
  add as much as You need
- Enable: true
  (check)
- Route
  add route defined inf LCR::Routes
- Priority: first free
- Desc: VIP 091

Test GW with SIP client to GW

XLite - RightClick
- SIP Account Settings
  select Account
  - Properties
    - Account
      - Domain Proxy
        
        Register with domain adn receive incomming calls: false
        (uncheck)
- usage
  extension@$IP_ADDRESS